Step by step
The question
Question: simplify (2x²)³(x⁴).
(2x2)3(x4)
1 Write the power out
The power 3 outside the bracket means: the whole bracket, 3 times.
(2x2)3 = (2x2)(2x2)(2x2)
So we write the bracket out, times itself.
= ((2x2))((2x2))((2x2))(x4)
2 Numbers with numbers
In times, the order does not matter.
So numbers go with numbers, and each letter goes with the same letter.
order does not matter: ab = ba
We put them in groups.
= (2 × 2 × 2)(x2 x2 x2 x4)
3 Count the letters
So the rule is: same letter, times, add the powers.
2 plus 2 plus 2 plus 4 is 10.
2 + 2 + 2 + 4 = 10
xa xb = xa + b
2 times 2 times 2 is 8.
So we get 8x¹⁰.
= 8x10
Let's look back.
First: write the power out.
Then: numbers with numbers.
Last: count the letters.
Answer
= 8x10